Soon after having been spotted in the sky on 8 October 2013 from the Crimean Astrophysical Observatory (Ukraine), asteroid 2013TV135 topped the Risk Page. Being a relatively large object (500 m in...

The fly-by of 2020 QG asteroid

Detecting an asteroid beyond telescope normal operation

ESA's NELIOTA project detects the flash of light produced when an asteroid collides energetically with the lunar surface and recently recorded its 100th impact.

Spotting Earth-threatening asteroids is tough partly because the sky is so big. But insects offer an answer, since they figured out long ago how to look in many directions at once.

A newly-established collaboration between our team and the Instituto de Astrofísica de Canarias (IAC) led to the first-ever observation of an NEA with the 10.4 m Gran Telescopio Canarias (GTC). We...

If an asteroid is discovered which could come very close to Earth, it is important to coordinate observational activities quickly to better know its precise flyby distance.This is illustrated by...

The ESA SSA-NEO Coordination Centre has released the December newsletter.

Orbit Properties This page contains information about orbital properties of the object, as computed by the Aegis Orbit Determination and Impact Monitoring system. Orbital elements at a refence...

Summary 2024 RW1 was the ninth asteroid discovered to be on an impact trajectory with Earth while still in space. The object was found by the Catalina Sky Survey on the morning UT hours of 4...

Summary 2024 BX1 was the eighth object to be detected before impacting the Earth. The meteoroid was discovered at Piszkéstető Observatory (Hungary) on 20 January 2024 and impacted the atmosphere...

The first table includes all objects for which a non-zero impact probability has been computed, considering only impacts in the next 100 years. The second table, called Special Risk List, includes...

This is the page hosting links for the NEO Tools

Summary 2024 XA1 was the eleventh asteroid discovered on an impact trajectory, and the fourth one in 2024. It was found by the Catalina Sky Survey team observing from Kitt Peak, Arizona. It...

NEOCC has managed a network of observatories to observe the result of the interplanetary collision

Summary 2023 CX1 was the seventh object to be detected before impacting the Earth. The meteoroid was discovered at Konkoly Observatory (Hungary) on 12 February 2023 and impacted the atmosphere over...

The Schmidt telescope of the Centro Astronómico Hispano en Andalucía (CAHA Schmidt) was first installed in 1955 at the Hamburg Observatory in Germany, and subsequently moved to the Calar Alto...

Planetary Defence involves a collaborative effort among various organizations, including the European Space Agency (ESA), NASA, the Jet Propulsion Laboratory (JPL), and the Center for Near Earth...

September 2021 Newsletter

Asteroid 2012 TC4, discovered five years ago by the Pan-STARRS survey,will come back close to Earth on 12 October 2077.It will fly-by at 44 000 km from the surface, providing a rare chance to carefully observe a small known object during its entire approach to our planet.

We took the opportunity of the ExoMars 2016 launch to organize a ground-based observational campaign. The goal was to test, in a reverse mode, the observational scenario needed to monitor the approach of a small Earth impactor. The spacecraft and other hardware related to the launch was successfully imaged;

November was a month of close approaches of many small objects. A particularly interesting case was 2015 VY105, which came to less than 30 000 km from the Earth’s surface on 15 November.

In the month of December, (29075) 1950 DA, an old NEA, entered the risk list in a peculiar way: the addition is not based on new observations but it is the combined result of an already existing good observational coverage for this object, together with a newly implemented dynamical model now available at NEODYS.

The newly discovered asteroid (469219) 2016 HO3 has been attracting the interest of the NEO community becauseof its peculiar orbital path. Having the same period of revolution of the Earth but a higher eccentricity and being properly phased, this object appears to circle our planet in a retrograde “quasi-satellite” orbit with period one year.